ACT MATH FORMULA REVIEW

Front

Area of a Trapezoid

Back

A = ½ (b₁ + b₂)h, where b₁ and b₂ are the lengths of the two parallel sides and h is the height.

Front

What is the formula for the perimeter of a rectangle?

Back

P = 2l + 2w, where l is the length and w is the width.

Front

What is the formula for tangent in a right triangle?

Back

tanθ = opposite / adjacent.

Front

What is the equation of a circle?

Back

(x - h)² + (y - k)² = r², where (h, k) is the center and r is the radius.

Front

Volume of a Cylinder

Back

V = πr²h, where r is the radius and h is the height.

Front

What is the formula for the area of a rectangle?

Back

A = lw, where l is the length and w is the width.

Front

What is the formula for the area of a triangle?

Back

A = ½bh, where b is the base and h is the height.

Front

What is the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse and a and b are the other two sides.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the formula for the volume of a rectangular prism?

Back

V = lwh, where l is the length, w is the width, and h is the height.